Lubricating oil



Patented Oct. .22, 1929 {UNITEb STATES PATENT OFFICE nAnrEL sTRYxER, on amount, NEW YORK, ssreuoa, BY MESNE ASSIGNMENTS, TO THE TExAs COMPANY, 'OF NEW YORK, N. Y., A CORPORATION OF DELAWARE LuBEIcATING OIL No Drawing.

cant. In the course of time the cooperating surfaces of the bands become hard and glazed m and fail to operate in the manner originally intended. The result of this is slipping or chattering? of the transmission bands when starting or stopping, causing uncertainty in the operation of the car in addition to being an quite harmful to the bands themselves.

I have found that a great improvement may be derived when operating a car having planetary transmission by employing as v a lubricant a hydrocarbon oil containing a at minute amount of a natural wax. Such a lubricant is very efiicient in preventing chattering of the brake or transmission bands and is easily compounded at low costs.

lhe natural waxes which havebeenfound an to be especially useful in this connection are carnauba wax, bayberry wax, beeswax, japan wax and spermaceti wax. Other natural waxes which are sufiiciently soluble in the lubricating oil with which they are to be compounded to prevent actual separation of the wax from the oil may also be employed, but the previously mentioned waxes are spellll cifically pointed out because of their cheap ness and availability. 1

Unly minute quantities of these substances are necessary to produce the desired effect. In general two per cent is the maximum amount necessary to use,'whi'le under certain circumstances the amount may be as low as one quarter of one per cent. To prepare the compounded oil it is merely necessary to warm it suitable grade of hydrocarbon oil and stir 'llili in the desired amount of the particular wax chosen preferably in a finely divided condilln tion while aintaining the temperature above Application filed March 23, 1925. Serail No. 17,797.

normal atmospheric temperature until the wax has entirely dissolved.

lVhile the compounded oils upon which this invention is based are especially well adapted to prevent chattering in planetary transmission automobiles they have also been found to be very valuable for general lubricating purposes. Extensive experiments indicate that compounded oils of this character reduce the wear of metallic parts to a much greater exltent than the uncompounded hydrocarbon o1 In addition oils containing natural waxes are particularly suited for high temperature lubrication such as that obtaining in motor cars owing to the stable characterof the waxes, in that they do not break down or be- I come rancid with attendant impairment of the original properties of the compounded oil.

In using the term natural wax in the specification and claims I desire it to be understood that I refer to naturally occurring animaland vegetable waxes but do not wish to include naturally occurring mineral waxes, such as ozocerite or other-earth Waxes which, as far as known, have no special lubricating properties. The waxes specified having been found to have qualities adapted to prevent the chattering in planetary transmissions may be designated as anti-chattering compounds.

What I claim is:

1. A lubricant consisting of a hydrocarbon lubricating oil and a natural wax having antichattering properties selected from the following group: carnauba wax, bayberry wax,

beeswax, japan wax and spermaceti wax.

2. A lubrlcant consisting of a hydrocarbon lubricating oil and between 0.25% and 2% of a natural wax having anti-chattering properties selected from the following group: carnauba wax, bayberry wax, beeswax, japan Wax and spermaceti wax.

In witness whereof I have hereunto set my hand this 20th day of March, 1925.

- DANIEL S'IRYKER. 

